package com.gym.demo;

public class Test {

	public static void main(String[] args) {
		String a = "1213131313";
		System.err.println(a.charAt(3));
		System.out.println(a.substring(3,4));
		int b = 1;
		char c = 'a';
		System.err.println(b+c);
		String[] dStrings = new String[5];
		dStrings[1] = "1";
		String[] f = {"2","3"};
		String[] string = new String[] {"12","34"};
		System.out.println(dStrings.length+f.length+string.length+"-----");
		
		int[][] g = new int[2][2];
		g[0][0] = 1;
		g[0][1] = 2;
	
		g[1][0] = 4;
		g[1][1] = 5;


		for(int i=0;i<g.length;i++){
			for (int j = 0; j < g[i].length; j++) {
				System.err.println(g[i][j]+"\n");
			}
		}
		
	}

}
